1The standard cardioid directivity can effectively eliminate background noise and record the target sound accurately and clearly. 2Support real-time monitoring function and mute function to ensure perfect working condition. 3High density windproof cotton can effectively filter out wind noise and make the record clearer. 4Excellent audio quality and low noise for smoother recording, fit for iPhone, provide better use feeling 5Made of high quality aluminium material, firm and durable, provide longer service life. Item Type: Cardioid Smartphone Microphone Material: Aluminum Weight: Approx. 115g/4.1oz Color: Black and orange red Directivity: Cardioid Frequency Response: 60 hz-20 KHZ SNR: >70dB, maximum sound pressure level >100dB Output Port: for IOS, 3.5mm headphone port Fitment: for IOS 10 or above Operating Temperature: 0-50 Installation steps: 1. Take out the product and accessories from the box, first install the windproof cotton onto the microphone 2: Install the microphone on the phone 3: Turn on the adjustment mode of the phone to use 1 x Microphone 1 x Windproof Cotton 1 x Portable Bag 1 x Instruction 1. Due to various versions for iOS system, some mobile phones may be incompatible. Please refer to the official website of the corresponding sales website for compatibility.2: During use, please try to set the mobile phone to airplane mode to avoid interference of mobile phone signal;3: Do not use the device in the vicinity of heat source or interference source, such as radiator, oven, refrigerator, air conditioner, mobile phone and WiFi;4: This product belongs to high precision instrument products, please avoid falling, collision or heavy hit when using;5: Do not use in rainy or humid environment, otherwise there will be the danger of short circuit.